Where is the fallacy here?












2















Where is the fallacy here:




  1. whatever is natural is not unnatural


  2. whatever is unnatural is not natural


  3. the phenomenon of cats being born into this world is natural


  4. the phenomenon of rabbits being born into this world is not the phenomenon in point 3



Conclusion: the phenomenon of rabbits being born into this world is unnatural










share|improve this question









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  • 1





    Obviously not all cats are normal.

    – Bread
    1 hour ago











  • Assuming cats are normal: rabbits can also be normal without being cats.

    – Bread
    33 mins ago











  • @Bread - I did some edits.

    – brilliant
    32 mins ago











  • @brilliant My answer responds to your original post. I do not think that the edits change my answer.

    – Mark Andrews
    15 mins ago
















2















Where is the fallacy here:




  1. whatever is natural is not unnatural


  2. whatever is unnatural is not natural


  3. the phenomenon of cats being born into this world is natural


  4. the phenomenon of rabbits being born into this world is not the phenomenon in point 3



Conclusion: the phenomenon of rabbits being born into this world is unnatural










share|improve this question









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brilliant is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • 1





    Obviously not all cats are normal.

    – Bread
    1 hour ago











  • Assuming cats are normal: rabbits can also be normal without being cats.

    – Bread
    33 mins ago











  • @Bread - I did some edits.

    – brilliant
    32 mins ago











  • @brilliant My answer responds to your original post. I do not think that the edits change my answer.

    – Mark Andrews
    15 mins ago














2












2








2








Where is the fallacy here:




  1. whatever is natural is not unnatural


  2. whatever is unnatural is not natural


  3. the phenomenon of cats being born into this world is natural


  4. the phenomenon of rabbits being born into this world is not the phenomenon in point 3



Conclusion: the phenomenon of rabbits being born into this world is unnatural










share|improve this question









New contributor




brilliant is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












Where is the fallacy here:




  1. whatever is natural is not unnatural


  2. whatever is unnatural is not natural


  3. the phenomenon of cats being born into this world is natural


  4. the phenomenon of rabbits being born into this world is not the phenomenon in point 3



Conclusion: the phenomenon of rabbits being born into this world is unnatural







logic






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brilliant is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









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share|improve this question




share|improve this question








edited 32 mins ago







brilliant













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asked 2 hours ago









brilliantbrilliant

1134




1134




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  • 1





    Obviously not all cats are normal.

    – Bread
    1 hour ago











  • Assuming cats are normal: rabbits can also be normal without being cats.

    – Bread
    33 mins ago











  • @Bread - I did some edits.

    – brilliant
    32 mins ago











  • @brilliant My answer responds to your original post. I do not think that the edits change my answer.

    – Mark Andrews
    15 mins ago














  • 1





    Obviously not all cats are normal.

    – Bread
    1 hour ago











  • Assuming cats are normal: rabbits can also be normal without being cats.

    – Bread
    33 mins ago











  • @Bread - I did some edits.

    – brilliant
    32 mins ago











  • @brilliant My answer responds to your original post. I do not think that the edits change my answer.

    – Mark Andrews
    15 mins ago








1




1





Obviously not all cats are normal.

– Bread
1 hour ago





Obviously not all cats are normal.

– Bread
1 hour ago













Assuming cats are normal: rabbits can also be normal without being cats.

– Bread
33 mins ago





Assuming cats are normal: rabbits can also be normal without being cats.

– Bread
33 mins ago













@Bread - I did some edits.

– brilliant
32 mins ago





@Bread - I did some edits.

– brilliant
32 mins ago













@brilliant My answer responds to your original post. I do not think that the edits change my answer.

– Mark Andrews
15 mins ago





@brilliant My answer responds to your original post. I do not think that the edits change my answer.

– Mark Andrews
15 mins ago










4 Answers
4






active

oldest

votes


















1














Here is the argument:




  1. No N is not-N.


  2. No not-N is N.


  3. All C are N.


  4. No R are C.



Thus: No R are N.



The syllogism is invalid for two reasons. First, the third premise denies the antecedent (cats) of the fourth. There can be other animals that are normal. Wikipedia: Denying the antecedent; Formal fallacy.



Second, a term that is distributed in the conclusion (normal) is not distributed in the major premise (all cats are normal). Wikipedia: Illicit major.



The first two premises are not needed except as definitions. The second two, about cats and rabbits, state actual relationships between categories,






share|improve this answer
























  • Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

    – brilliant
    3 mins ago



















1














You imply in point 3 that all cats are normal. I don't know the specific name of the fallacy, but your argument is invalid because you didn't state that all things normal are cats, only that all cats are normal.






share|improve this answer








New contributor




Jonah.P is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





















  • I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

    – Frank Hubeny
    49 mins ago











  • By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

    – brilliant
    39 mins ago











  • I did some editing to my question.

    – brilliant
    32 mins ago



















0














Your error here is defining "normal" as a single set of things to which something either belongs or doesn't. That's not a useful (or normal) definition. Things are only normal or abnormal in context, compared to others of their kind. Are they a common or typical example of that kind, or are they an unusual or rare example? Normal cats have long tails (Manx cats might be considered abnormal). But a cat would be, say, a very abnormal voter, or an abnormal vehicle (more typical voters being human and more typical vehicles being machines). A perfectly normal person, likewise, would be an abnormal meal (cannibalism being rare), and a perfectly ordinary vehicle (say a bicycle) would be an unusual piece of art to hang on a wall.



You then make a second error in assuming that the statement "cats are normal" is equating the set of cats with the set of normal things. That's not what "are" means in this context. A more appropriate reading of that sentence would be to make cats a subset of normal things.






share|improve this answer
























  • I did some editing to my question.

    – brilliant
    31 mins ago



















0














The argument is basically the fallacy of Denying the Antecedant. ~C, C → N |- ~N




  • RabbitBirths are not CatBirths,

  • CatBirths are NaturalPhenomena,

  • therefore RabbitBirths are not NaturalPhenomena.


R → ~C , C → N |- R → ~N






share|improve this answer























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    4 Answers
    4






    active

    oldest

    votes








    4 Answers
    4






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1














    Here is the argument:




    1. No N is not-N.


    2. No not-N is N.


    3. All C are N.


    4. No R are C.



    Thus: No R are N.



    The syllogism is invalid for two reasons. First, the third premise denies the antecedent (cats) of the fourth. There can be other animals that are normal. Wikipedia: Denying the antecedent; Formal fallacy.



    Second, a term that is distributed in the conclusion (normal) is not distributed in the major premise (all cats are normal). Wikipedia: Illicit major.



    The first two premises are not needed except as definitions. The second two, about cats and rabbits, state actual relationships between categories,






    share|improve this answer
























    • Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

      – brilliant
      3 mins ago
















    1














    Here is the argument:




    1. No N is not-N.


    2. No not-N is N.


    3. All C are N.


    4. No R are C.



    Thus: No R are N.



    The syllogism is invalid for two reasons. First, the third premise denies the antecedent (cats) of the fourth. There can be other animals that are normal. Wikipedia: Denying the antecedent; Formal fallacy.



    Second, a term that is distributed in the conclusion (normal) is not distributed in the major premise (all cats are normal). Wikipedia: Illicit major.



    The first two premises are not needed except as definitions. The second two, about cats and rabbits, state actual relationships between categories,






    share|improve this answer
























    • Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

      – brilliant
      3 mins ago














    1












    1








    1







    Here is the argument:




    1. No N is not-N.


    2. No not-N is N.


    3. All C are N.


    4. No R are C.



    Thus: No R are N.



    The syllogism is invalid for two reasons. First, the third premise denies the antecedent (cats) of the fourth. There can be other animals that are normal. Wikipedia: Denying the antecedent; Formal fallacy.



    Second, a term that is distributed in the conclusion (normal) is not distributed in the major premise (all cats are normal). Wikipedia: Illicit major.



    The first two premises are not needed except as definitions. The second two, about cats and rabbits, state actual relationships between categories,






    share|improve this answer













    Here is the argument:




    1. No N is not-N.


    2. No not-N is N.


    3. All C are N.


    4. No R are C.



    Thus: No R are N.



    The syllogism is invalid for two reasons. First, the third premise denies the antecedent (cats) of the fourth. There can be other animals that are normal. Wikipedia: Denying the antecedent; Formal fallacy.



    Second, a term that is distributed in the conclusion (normal) is not distributed in the major premise (all cats are normal). Wikipedia: Illicit major.



    The first two premises are not needed except as definitions. The second two, about cats and rabbits, state actual relationships between categories,







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 19 mins ago









    Mark AndrewsMark Andrews

    2,7851623




    2,7851623













    • Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

      – brilliant
      3 mins ago



















    • Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

      – brilliant
      3 mins ago

















    Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

    – brilliant
    3 mins ago





    Thank you. I guess your answer is fully applicable to the latest edits in my question, too, right?

    – brilliant
    3 mins ago











    1














    You imply in point 3 that all cats are normal. I don't know the specific name of the fallacy, but your argument is invalid because you didn't state that all things normal are cats, only that all cats are normal.






    share|improve this answer








    New contributor




    Jonah.P is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















    • I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

      – Frank Hubeny
      49 mins ago











    • By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

      – brilliant
      39 mins ago











    • I did some editing to my question.

      – brilliant
      32 mins ago
















    1














    You imply in point 3 that all cats are normal. I don't know the specific name of the fallacy, but your argument is invalid because you didn't state that all things normal are cats, only that all cats are normal.






    share|improve this answer








    New contributor




    Jonah.P is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















    • I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

      – Frank Hubeny
      49 mins ago











    • By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

      – brilliant
      39 mins ago











    • I did some editing to my question.

      – brilliant
      32 mins ago














    1












    1








    1







    You imply in point 3 that all cats are normal. I don't know the specific name of the fallacy, but your argument is invalid because you didn't state that all things normal are cats, only that all cats are normal.






    share|improve this answer








    New contributor




    Jonah.P is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.










    You imply in point 3 that all cats are normal. I don't know the specific name of the fallacy, but your argument is invalid because you didn't state that all things normal are cats, only that all cats are normal.







    share|improve this answer








    New contributor




    Jonah.P is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    share|improve this answer



    share|improve this answer






    New contributor




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    answered 1 hour ago









    Jonah.PJonah.P

    112




    112




    New contributor




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    New contributor





    Jonah.P is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    • I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

      – Frank Hubeny
      49 mins ago











    • By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

      – brilliant
      39 mins ago











    • I did some editing to my question.

      – brilliant
      32 mins ago



















    • I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

      – Frank Hubeny
      49 mins ago











    • By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

      – brilliant
      39 mins ago











    • I did some editing to my question.

      – brilliant
      32 mins ago

















    I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

    – Frank Hubeny
    49 mins ago





    I am not sure that point 3 is "all" cats are normal or "some" cats are normal.

    – Frank Hubeny
    49 mins ago













    By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

    – brilliant
    39 mins ago





    By "cats are normal" I meant to say that it is absolutely normal that cats are born into and exist in this world, whatever condition some cats may be born in (blind, no limbs, etc.)

    – brilliant
    39 mins ago













    I did some editing to my question.

    – brilliant
    32 mins ago





    I did some editing to my question.

    – brilliant
    32 mins ago











    0














    Your error here is defining "normal" as a single set of things to which something either belongs or doesn't. That's not a useful (or normal) definition. Things are only normal or abnormal in context, compared to others of their kind. Are they a common or typical example of that kind, or are they an unusual or rare example? Normal cats have long tails (Manx cats might be considered abnormal). But a cat would be, say, a very abnormal voter, or an abnormal vehicle (more typical voters being human and more typical vehicles being machines). A perfectly normal person, likewise, would be an abnormal meal (cannibalism being rare), and a perfectly ordinary vehicle (say a bicycle) would be an unusual piece of art to hang on a wall.



    You then make a second error in assuming that the statement "cats are normal" is equating the set of cats with the set of normal things. That's not what "are" means in this context. A more appropriate reading of that sentence would be to make cats a subset of normal things.






    share|improve this answer
























    • I did some editing to my question.

      – brilliant
      31 mins ago
















    0














    Your error here is defining "normal" as a single set of things to which something either belongs or doesn't. That's not a useful (or normal) definition. Things are only normal or abnormal in context, compared to others of their kind. Are they a common or typical example of that kind, or are they an unusual or rare example? Normal cats have long tails (Manx cats might be considered abnormal). But a cat would be, say, a very abnormal voter, or an abnormal vehicle (more typical voters being human and more typical vehicles being machines). A perfectly normal person, likewise, would be an abnormal meal (cannibalism being rare), and a perfectly ordinary vehicle (say a bicycle) would be an unusual piece of art to hang on a wall.



    You then make a second error in assuming that the statement "cats are normal" is equating the set of cats with the set of normal things. That's not what "are" means in this context. A more appropriate reading of that sentence would be to make cats a subset of normal things.






    share|improve this answer
























    • I did some editing to my question.

      – brilliant
      31 mins ago














    0












    0








    0







    Your error here is defining "normal" as a single set of things to which something either belongs or doesn't. That's not a useful (or normal) definition. Things are only normal or abnormal in context, compared to others of their kind. Are they a common or typical example of that kind, or are they an unusual or rare example? Normal cats have long tails (Manx cats might be considered abnormal). But a cat would be, say, a very abnormal voter, or an abnormal vehicle (more typical voters being human and more typical vehicles being machines). A perfectly normal person, likewise, would be an abnormal meal (cannibalism being rare), and a perfectly ordinary vehicle (say a bicycle) would be an unusual piece of art to hang on a wall.



    You then make a second error in assuming that the statement "cats are normal" is equating the set of cats with the set of normal things. That's not what "are" means in this context. A more appropriate reading of that sentence would be to make cats a subset of normal things.






    share|improve this answer













    Your error here is defining "normal" as a single set of things to which something either belongs or doesn't. That's not a useful (or normal) definition. Things are only normal or abnormal in context, compared to others of their kind. Are they a common or typical example of that kind, or are they an unusual or rare example? Normal cats have long tails (Manx cats might be considered abnormal). But a cat would be, say, a very abnormal voter, or an abnormal vehicle (more typical voters being human and more typical vehicles being machines). A perfectly normal person, likewise, would be an abnormal meal (cannibalism being rare), and a perfectly ordinary vehicle (say a bicycle) would be an unusual piece of art to hang on a wall.



    You then make a second error in assuming that the statement "cats are normal" is equating the set of cats with the set of normal things. That's not what "are" means in this context. A more appropriate reading of that sentence would be to make cats a subset of normal things.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 48 mins ago









    Lee Daniel CrockerLee Daniel Crocker

    1,524512




    1,524512













    • I did some editing to my question.

      – brilliant
      31 mins ago



















    • I did some editing to my question.

      – brilliant
      31 mins ago

















    I did some editing to my question.

    – brilliant
    31 mins ago





    I did some editing to my question.

    – brilliant
    31 mins ago











    0














    The argument is basically the fallacy of Denying the Antecedant. ~C, C → N |- ~N




    • RabbitBirths are not CatBirths,

    • CatBirths are NaturalPhenomena,

    • therefore RabbitBirths are not NaturalPhenomena.


    R → ~C , C → N |- R → ~N






    share|improve this answer




























      0














      The argument is basically the fallacy of Denying the Antecedant. ~C, C → N |- ~N




      • RabbitBirths are not CatBirths,

      • CatBirths are NaturalPhenomena,

      • therefore RabbitBirths are not NaturalPhenomena.


      R → ~C , C → N |- R → ~N






      share|improve this answer


























        0












        0








        0







        The argument is basically the fallacy of Denying the Antecedant. ~C, C → N |- ~N




        • RabbitBirths are not CatBirths,

        • CatBirths are NaturalPhenomena,

        • therefore RabbitBirths are not NaturalPhenomena.


        R → ~C , C → N |- R → ~N






        share|improve this answer













        The argument is basically the fallacy of Denying the Antecedant. ~C, C → N |- ~N




        • RabbitBirths are not CatBirths,

        • CatBirths are NaturalPhenomena,

        • therefore RabbitBirths are not NaturalPhenomena.


        R → ~C , C → N |- R → ~N







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 11 mins ago









        Graham KempGraham Kemp

        85618




        85618






















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